Pelecyphora tuberculosa
Pelecyphora tuberculosa, the corncob cactus, is a species of flowering plant in the family Cactaceae, native to the south-central United States, and northern Mexico.
Description
Escobaria tuberculosa grows singly or in groups and is very variable. The cylindrical to egg-shaped shoots reach heights of 5 to 12 centimeters with diameters of 2.5 to 7 centimeters. The warts, up to 10 millimeters long, become hard and persistent. The four to eight yellow, straight central spines have a pink or red tip and are 1 to 2 centimeters long. In the middle one of them is stronger. The approximately 20 to 30 yellow, white or gray marginal spines are straight and spread out. They are up to 1.2 centimeters long.The fragrant flowers are pink and open wide. They are 2 to 3 centimeters long and reach the same diameter. The elongated fruits are usually red and 1.2 to 2 centimeters long.